At least 30 Philadelphia cops were injured by early Tuesday as violent mobs torched squad cars and charged lines of officers in a night of carnage sparked by the police shooting of a knife-wielding man. Organized protests gathered at a park chanting “Black lives matter” soon after news broke of the 4 p.m. death of 27-year-old Walter Wallace, who was shot by police after refusing to drop a knife. The New York Post is your source for breaking news, news about New York, sports, business, entertainment, opinion, real estate, culture, fashion, and more. Catch the latest news here: https://nypost.com/ Follow The New York Post on: Twitter - https://twitter.com/nypost Facebook - https://www.facebook.com/NYPost